I have been using ubuntu since the early days on and off. I stopped using ubuntu back in 2008 for personal reason and now I am back. I have loaded Ubuntu 11.10 on my samsung N150 Plus and I think everything worked well except when I reboot my bluetooth head set disconect from the system and I have to re - pair the device before I can hear sound.

but that is not the issue, I have upgraded to the latest kernel as at now "3.0.0-17-generic" my battery keeps fluctuating from 5hrs to 7hrs back to 4hrs. I was wondering if it is a bug in the power management. the documentation that came with the system states that the battery is suppose to run at most 10hrs. I am dual booting Ubuntu and Windows 7 and the power dont fluctuate as in ubuntu.

hope to hear a reply soon